In which document must the disclosure of rescission rights also appear?

The correct choice highlights that the disclosure of rescission rights must appear in the contract for sale. This is significant because the contract is a legal document that formalizes the agreement between the buyer and the seller, outlining all terms and conditions, including the buyer's rights to rescind the contract within a specified period.

Including the rescission rights in the contract ensures that buyers are fully informed of their ability to cancel the transaction if they change their mind, thus protecting their interests. This requirement emphasizes the importance of transparency in such agreements, providing consumers with the necessary information to make informed decisions.

While other documents, such as a buyer acknowledgment form or a voluntary cancellation form, may relate to the transaction, they do not serve the same purpose as the contract for sale in formally detailing the rights and obligations of the parties involved in the transaction, particularly in terms of rescission rights. The developer's brochure, while informative, is typically a marketing document and not legally binding like the contract for sale.